Adc - SIM Tech SIMCom SIM5360 Hardware Design

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Note 50ms<t<200ms. ESD components are suggested to be used on Reset pin.

3.13.3 ADC

SIM5360 has a dedicated ADC that is available for digitizing analog signals such as battery voltage and so
on; it is on PIN 47 and PIN 46 , namely ADC1 and ADC2 . This ADC is 15 bit successive-approximation
circuit, and electronic specification is shown in the following table.
Table 29: Electronic Characteristics
Specification
Resolution
Analog input bandwidth
Gain Error
Offset Error
Input Range
Input serial resistance
Power supply current
Normal operation
Power supply current
Off
User can introduce a signal in the ADC pin directly and use the AT command "AT+CADC" to get the raw
data which is between 0 and 32768. The data can be transformed to any type such as voltage, temperature
etc. Please refer to document [1].
SIM5360_Hardware Design_V1.01
Figure 37: Reset circuit
Min Typ Max
15
100 –
–
-2.5 +2.5
-3.5 +3.5
GND 2.2V
2
1.5
50 200
Smart Machine Smart Decision
Unit Comments/Conditions
Bits
kHz
Analog Vdd = ADC reference
%
2.4MHz sample rate
LSB
V
kΩ Sample and hold switch resistance
mA
nA
50
2013-11-22